电感耦合等离子体质谱法(ICP-MS)测定运动员食品中铅、砷、镉、铜

Determination of Copper,Arsenic,Cadmium,Lead in Athletic Food by Inductively Coupled Plasma Mass Spectrometry

以Sc、Ge、In、Bi作内标，采用电感耦合等离子体质谱法（ICP-MS）测定运动员食品中铅、砷、镉、铜。实验表明，方法的线性范围宽，线性相关系数均大于0．999。样品的加标回收率均在88．5％～107．5％，相对标准偏差均在5．0％之内。测定了GBW08503b、NBS1568、GBW08571标准参考物质中上述元素，测定值均在标准值范围内。该方法简单、快速、灵敏、准确，适用于运动员食品中铅、砷、镉、铜含量的分析。

Inductively coupled plasma mass spectrometry （ICP-MS） was applied to determine copper, arsenic, cadmium, lead in athletic food using Sc, Ge, In, Bi as internal standard. The linear correlation factor for four elements are good （r〉0. 999）. Recoveries of spiked samples were in the range of 88. 5%-107. 5% and precision was fine, and RSD is lower than 5.0%. The results showed close agreement with the reference values in three standard reference materials of GBW08503b,NBS1568,GBW08571. It indicated that the method is simple, sensitive ,accurate and short of analytical cycle, which can meet the demand for the determining copper, arsenic, cadmium, lead in athletic food.